package com.itheima.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.itheima.common.R;
import com.itheima.entity.User;
import com.itheima.service.UserService;
import com.itheima.utils.SMSUtils;
import com.itheima.utils.ValidateCodeUtils;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.itheima.utils.RedisConstants.LOGIN_CODE_KEY;
import static com.itheima.utils.RedisConstants.LOGIN_CODE_TTL;

@Slf4j
@RestController
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @Autowired
    private StringRedisTemplate stringRedisTemplate;

    /**
     * 发送手机验证码
     *
     * @param user
     * @param session
     * @return
     */
    @PostMapping("/sendMsg")
    public R<String> sendMsg(@RequestBody User user, HttpSession session) {
        //获取手机号
        String phone = user.getPhone();
        System.out.println("手机号：" + phone);
        if (StringUtils.isNotEmpty(phone)) {
            //生成随机的4位验证码
            String code = ValidateCodeUtils.generateValidateCode(4).toString();

            //调用阿里云提供的短信服务API完成发送短信
            SMSUtils.sendMessage("瑞吉外卖", "SMS_222222222", phone, code);  //这个是错误的
//            SMSUtils.sendMessage("瑞吉外卖","SMS_262135039",phone,code);  //这个才是正确的，但是已经过期了，没钱买

            //需要将生成的验证码保存到Session中
//            session.setAttribute(phone, code);

            //将生成的验证码保存到Redis中，有效期2分钟
            stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY + phone, code, LOGIN_CODE_TTL, TimeUnit.MINUTES);

            //控制台打印验证码
            System.out.println("验证码为：" + code);
            return R.success("手机验证码发送成功！");
        }
        return R.error("短信发送失败！");
    }

    /**
     * 移动端用户登录
     *
     * @param map
     * @param session
     * @return
     */
    @PostMapping("/login")
    public R<User> login(@RequestBody Map map, HttpSession session) {
        log.info(map.toString());

        //获取手机号
        String phone = map.get("phone").toString();
//        System.out.println(phone);

        //获取验证码
        String code = map.get("code").toString();

        //从session中获取保存的验证码
//        Object codeInRedis = session.getAttribute(phone);

        //从Redis中获取验证码
        Object codeInRedis = stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + phone);

        //比对验证码
        if (codeInRedis != null && codeInRedis.equals(code)) {
            //如果比对成功则登录成功
            LambdaQueryWrapper<User> queryWrapper = new LambdaQueryWrapper<>();
            queryWrapper.eq(User::getPhone, phone);
            User user = userService.getOne(queryWrapper);
            if (user == null) {
                //判断当前手机号对应的用户是否为新用户，如果是新用户就自动完成注册
                user = new User();
                user.setPhone(phone);
                userService.save(user);
            }
            session.setAttribute("employeeId", user.getId());

            //如果用户登录成功，删除Redis中的验证码
            stringRedisTemplate.delete(LOGIN_CODE_KEY + phone);

            return R.success(user);
        }
        return R.error("登录失败");
    }

    /**
     * 前台用户登出
     *
     * @param request
     * @return
     */
    @PostMapping("/loginout")
    public R<String> loginout(HttpServletRequest request) {
        //清理session中保存的当前登录用户的id
        request.getSession().removeAttribute("employeeId");
        return R.success("退出成功");
    }

}
